Collapsible die for wiring or beading.



PATENTED JAN..16, 1906.

L. BAUROTH.

COLLAP SIBLE DIE FOR WIRING 0R BEADING.

APPLIOATION'IILED NOV. 16, I904.

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INVENTOR.

lV/TNESSES A TTORNEY'.

No. 810,023. PATENTED JAN. 16, 1906.

' L. BAUROTH.

COLLAPSIBLE DIE FOR WIRING 0R READING. APPLICATION FILED NOV. 16, 1904.

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UNITED STATES PATENT OFFICE.

. LEONHARD BAUROTH, OF TOLEDO, OHIO, ASSIGNOR TO LAWRENCE MANUFACTURING 00., OF TOLEDO, OHIO.

Specification of Letters Patent.

Patented Jan. 16, 1906.

Application filed November 16, 1904:. Serial No. 233,039.

To all 1071 0711, it may concern.-

Be it known that I, LEONHARD BAUROTH, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented a new and useful Improvement in Collapsible Dies for Wirin or Beading, of which the following is a speci cation.

My invention relates to a collapsible die for wiring or beading sheet-metal vessels, and has for its object to provide a tool of the kind that is adapted to wire the rim of a vessel in a single operation of the die-press. I accom plish these objects by the novel combination of parts constructed and operating as hereinafter described, and illustrated in the drawings, in which Figure 1 is a top plan view of my invention with the press-plate broken in half and one half removed to show two of the movable die-blocks in normal position in full line (the two opposite die-blocks in similar position below the press-plate being shown in dotted lines) and also to show a portion of the wall of the cavity of the die-base in full line, the remainder being shown in dotted lines. Fig.

2 is a transverse section on line XX of Fig. 1 i

with the press-plate raised and disconnected from the die-blocks. Fig. 3 is a bottom plan view of the press-plate. Fig. 4 is a side elevation of a movable die-block, showing the inner side and ends and a section of the base upon which it is mounted broken away at the ends. Fig. 5 is a sectional view of a die on line Y Y of Fig. 2, showing a broken-away section of the die-base. Fig. 6 is a side elevation of a press-plate cushion. Fig. 7 1s an end view of the same.

In the drawings, 1 is the base of the die, preferably quadrilateral with rounded corners, adapted to be mounted on the bed A of a press. (Not shown.) The die-base 1 is provided with the integral wall 2, disposed around a central area of the base of the size and shape of the bottom of the pan 3 or other vessel for the Wiring of which the die is designed to be used. The inner face of the wall 1 is formed to receive the vessel 3 and is vertical or sloped outwardly from the bottom of the cavity 4, formed by the wall as required to conform it to the outer face of the vesselwall. The base of the wall 2 is of uniform thickness, and the outer face of the wall is 1 the cavity4 is of a form suitable to receive a pan 3, having flared sides of equal length and rounded corners; but the cavity 4 may be constructed to receive oblong or circular vessels. The base 1 is also provided with the incuts 5, which are arranged in four pairs, each pair being parallel with and arranged one on each side of a line radial to the center of the base 1, as shown in dotted lines in Fig. 1 and in full lines in Fig. 4, said radial lines being at ninety degrees from each other, with the outer end of each incut so located that they are all at the same radial distance from the center of the base, and the inner end of the incuts are at the same perpendicular distance from the outer face of the wall 2. The base is also provided with four incuts or cavities 6, extending inward a distance on said radial lines from a circle drawn through the outer ends of the incuts 5, toward the base center.

In the incuts 5 are mounted the guides 7, as shown in Fig. 4 and also shown in dotted lines in Fig. 1, which are held secured in the incuts by the screws 8. The portions of the guides 7 projecting above the base are angled outward at the sides and of increased width at the top, and there is movably mounted on each pair of guides by parallel dovetail grooves 9 a die-block 10. The d1e-blocks 10 as to their outer faces are quadrants of the same circle, and their ends are radial to said circle, and their inner faces are parallel at all points with the wall 2, and the circle formed by the outer faces of the die-blocks, when assembled around the wall with their ends meeting, is of such radius that their inner faces are at all points an equal perpendicular distance from the outer face of the wall 2. The bottom faces of the die-blocks are faced to coincide with theupper face of the diebase and move smoothly and freely thereon as directed by the guides 7. The outer faces of the die-blocks are perpendicular to the r base from the base to a line near their top screws 14, with the outer edges of the die-.

plates abutting shoulders 12, and with the ends of'the die-plate in vertical alinement wiring-groove 16, extending from end to end of each die-plate around its inner face, the grooves 16 being semicircular in vertical cross-section, and opposite the grooves 16 the top portion of the wall 2 is reduced by a curved incut 1.6. The die-blocks are of such height relative to the height of the wall 2 that when an unwired pan 3, having a wiring-flange 17, is placed in the cavity 4 with the flange 17 resting on top of the Wall 2 the upper portion of the wiring-grooves of the projecting portions of the die-plates will be in the same plane with the upper face of.

the flange 17. To the outer faces of the dieblocks, in vertical alinement with the cavities 6 of the base, are secured the arms 18, the lower ends of which project into the cavities and are shouldered against the outer ends of the coil-springs 19, housed one in each cavity, as shown in Figs. 4 and 5. The dieblocks thus constructed, arranged, mounted,

and equipped are adapted to be converged toward the center of the base around the wall 2 and whenreleased to be automatically returned to their normal positions by the springs 19, as shown in Fig. 1.

To operate the die, I have provided the cushioned press-disk 20, having the central integral stem 21 projecting axially to the disk and adapted to [it into the socket of the head of the press plunger or slider. (Not shown.) The disk 20 is also provided with the integral annular rim-flange 22, projecting from the outer side of the disk opposite to the stem, the inner face of the flange 23 belng beveled at the same angle as the bevel 11 of the die-blocks, and the diameter of the disk 20 is such that the lower portion of the beveled face 23 of the disk-flange will engage the bevel 11 of the disk-blocks in'their normal radial positions as held by the spring 19. The disk 20 is provided with the cushion-plate 24, the lower portion of which is reduced and adapted to enter the vessel 3 when the latter is mounted in the cavity 4 with its inward flange '17 resting on the top of the wall 2, as shown in Fig. 2, and the upper portion of the cushion-plate is provided with the flange 25, adapted to extend partly over and rest on the flange 17 of the vessel. The cushionplate is provided witha plurality of transverse bores 26, one central of the plate and the others at radial points thereto. The bores 26 are counterbored from the under face of the plate, and the cushion-plate is centrally secured to the under side of the pressdisk by the stud screw-bolts 27, which are tapped into the body of the press disk, the heads of the screw-bolts being adapted to enter the counterbores of the bores 26 flush with the bottom face of the cushion-plate. Between the cushion-plate and the press-plate there are mounted on the stud-bolts the hollow rubber cushions 28, which are of a length to hold the cushion-plate normally below the plane of the loweredge of the flange 22 of the press-disk. Thus constructed and the centers of the die-base and press-disk being adjusted and secured in vertical alinement with the axis of the press plunger or slider with a vessel 3 in the cavity 4 of the die-base, as shown in Fig. 2, when the press is operated to force the plunger downward the cushionplate 24 will first enter the vessel 3 until its flange 25 is resting on the wiring-flange 17 of the vessel. The further movement of the cushion-plate will be arrested, and during the remainder of the downward stroke of the plunger the cushion-plate will be pressed on the flange 17, holding it firmly on the top of the wall 2 of the die-base, while the press disk will be forced further down until the beveled flange-face 23 engages the bevels 11 of the die-blocks and wedges the die-blocks convergingly inward until the die-plates first engage the outer edge of the wiring-flange 17 of the vessel at the top portions of the grooves 16 and bend it downward and then roll it inward, following the face of the groove until at the completion of the downstroke of the plunger the flange is completely wired, the term wired as here used and un derstood in the art referring to the rolling up of the flange either with or without inclosing a wire. When it is desired to inclose a wire in the rim, a wire of suitable length is bent around the curved incut 16 of the wall 2 before the vessel 3 is placed in the cavity 4;, in which position, by the operation of the die described, the flange 17 will be curved around the wire. On the upstroke of the pressplunger the die-blocks will first be released and moved. back to their normal positions by the spring 19, and during the remainder of the upstroke the cushion-plate will be lifted from the vessel, which may then be removed and another substituted for the next downstroke. f

It is manifest that I am not limited to the number of die-blocks shown in Fig. 1 as completing a circle around the wall 2 and that without departing from the principle-of construction and operation of my invention the number of die-blocks into which the circle is radially divided may be increased or diminished as may be best suited-to the form and dimensions of the vessel to be wired.

What I claim to be new is 1. In a wiring-die, the combination with a die-base adapted to rest on a press-bed and having a wall around its central area forming a cavity adapted to receive the body of a vessel with its unwired flange resting on and projecting over the top of the wall, of a plurality of pairs of guides on the base, the guides of each pair being parallel with a different line radial to the base center and the pairs being at intervals around the cavity-wall; dieblocks mounted onthe guides and adapted to move convergingly toward and divergingly from the wall of the cavity; a die-plate mounted on each die-block having an inwardly-projecting portion provided with a grooved face semicircular in cross-section, the top portion of the diegrooves being adapted when the blocks are moved inward to engage the edge of the vessel -flange; a curved incut in the outer top portion of the cavity-wall opposite the grooves of the dieplates adapted to receive a wire; springs adapted to yieldingly hold the die-blocks normally diverged; a cushion press-disk adapt ed to be secured to a press-plunger and to be moved thereby to first engage a vessel in the cavity and press it on the wall and then simultaneously engage and converge the dieblocks until the grooves of the die-plates meet end to end around the curved incut of the wall.

2. In a wiring-die, the combination with a die-base adapted to rest on a press-bed and having a wal around its central area forming a cavity adapted to receive the body of an incomplete vessel with its unwired flange resting on and projecting over the top of the wall, of a plurality of pairs of guides on the base, the guides of each pair being parallel with a different line radial t0 the base center and the pairs being at intervals around the cavitywall; die-blocks mounted on the guides and adapted to move convergingly toward or divergingly from the Wall of the cavity, said die-blocks having outer faces that are arcs of a common circle, ends that are radial to the samecircle, and inner faces that are parallel with the cavity-wall, said die-blocks being adapted to be converged to meet around and parallel with the cavity-wall of the base; a grooved die extension from the upper portion of the inner face of each of the die-blocks adapted when the die-blocks are converged around the wall to meet end to end and form a continuous groove, semicircular in cross section, around the top portion of the cavitywall; a curved incut in the outer top portion of the cavity-wall opposite the grooves of the die blocks; springs adapted to yieldingly hold the die blocks normally diverged; a bevel around the outer top portions of the die-blocks; a press-disk adapted to be secured to a press-plunger and provided with a cushioned plate to engage the vessel and a circumferential flange beveled to engage the bevels of the die-blocks, said cushioned plate being below the level of the flange and adapted to first. engage the projecting flange of a vessel in the cavity and yieldingly press it on the wall as the plunger descends, and said beveled flange being thereafter adapted to simultaneously engage and converge the dieblocks and force their grooved die extensions into engagement with the vessel-flange, substantially as set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 4th day of No: vember, 1904.

LEONHARD BAUROTH.

Witnesses:

' V. W. MOREHOUSE, M. A. DUGARTH. 

